Question – Urushiol is the oleoresin chemical associated with the development of contact dermatitis of toxicodendron plants. Once this substance dries on fomites is it still capable of inducing contact dermatitis and if so, for how long does it remain active?

Question – Some have proposed the use of topical capsaicin for the symptomatic relief of symptoms in the cannabinoid hyperemesis syndrome (CHS). What is the proposed mechanism for the efficacy of capsaicin in this setting?